In Mexico, a business can be purchased through a share purchase, an asset purchase, a merger or a combination of those transactions. If you're planning a buyout, getting a buyout agreement in place is essential.But how do they work exactly? Real estate 74. 1. Introduction. 2. Laws applicable to real estate transactions. 3. Learn how to initiate a buyout agreement effectively with this comprehensive guide. A share purchase agreement (SPA) sets out the terms of a sale of company shares. Here are the main terms. In this ultimate guide, we will unravel the mysterious world of buyout agreements and show you stepbystep how to navigate them like a pro.